Update shippable config

Author: Krum Motsov

shippable.yml

@@ -1,15 +1,19 @@
-language: javascript
+language: node_js
+
+node_js:
+  - "0.12"
 
 env:
   global:
     - secure: c013J4rEn4RTsfrHmQZHYkGbI0yo0XpknnuIYgn6dSxw9j8Hz+YdPFVvumqZrpAoR/Bt24StIcsB6SHShKA0LErs4X/PJL2gjCSuzaywiUq+2sBlYAb6YuBhPDlrRGR0pTX1cj3VxkarOgw0sUegRfE5YODgjupNFxgblLpPfUuJ7aTrsLfmBjfrSWivwLq5uMDt3njJmwI8qcDn3OrZ5UgF4mObQ/4/V4ImhBox9BHjKr38BpSigDdW15+QuhbrGIuC8LqmQ5dclhDScC5tvPsix41K1Ni1wLYtkhRbqF9FLpIk+IDnyWai4NjuJWACLdY9NlknjpSPTf1Uoji6yg==
 
 before_script:
   - ./testspace_install.sh
+  - npm install -g gulp
   - mkdir -p shippable/codecoverage
   - mkdir -p shippable/testresults
-
 script:
+  - gulp build
   - export PATH="${HOME}/testspace:${PATH}"
   - testspace config url $TESTSPACE_TOKEN
   - testspace run